TEAKDECKING SYSTEMS SIS440 TEAK DECK CAULKING - TDS Teak Caulking is a one-part, silane polymer system which when exposed to moisture in the air reacts to form a tough, flexible solid rubber compound. TDS Teak Caulking is a thixotropic material that does not sag during cure, and, when cured, has excellent temperature stability and chemical resistance. Because the sealant is neutral cure, it is non-corrosive to all substrates. Sold by the 10 oz. (300 ml) tube or 20 oz. (600 ml) tube. There are 12 tubes in a case of 10 oz. and 20 tubes in a case of 20 oz.